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OpenCV median filtering
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OpenCV based on median filtering method, median filter was proposed in 1971 by Tukey, which is a non-linear filtering techniques and typical. Under certain conditions it can be overcome, such as mean filter, image detail minimum mean square filtering produced is not clear, for the elimination of salt and pepper noise is extremely effective, plays an important role in the analysis of some of the optical fringe measurement image processing, but in the analysis of fringe center the method is not much use in processing the image, the edge information can be maintained, it is a typical noise smoothing method.
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